<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>闭包</title>
</head>
<body>
    <script>
    // function outer(){
    //   let a=10
    //   function fn(){
    //   //  console.log(a)
    //   console.log(111)
    //   }
    //   fn()
    // }
    // outer()
    function outer(){
    let a=10
    function fn(){
    console.log(a)
    }
    return fn
    }
   const fun= outer()
   fun()
    </script>
</body>
</html>